A method for manufacturing of the outer ring of a simple ball-and-socket bearing is provided with such an outer ring and ball and socket bearings

摘要

1,146,886. Making bearings. FAFNIR BEARING CO. 2 Aug., 1966 [3 Aug., 1965], No. 34603/66. Heading B3A. An outer ring of a spherical bearing is deformed before assembly to facilitate the insertion of a truncated spherical bearing ball 31 by a pusher ball which has spherically shaped opposite end faces 17, 18 and a cross-section between the end faces which has a maximum diameter substantially equal to the entrance diameter of the bore of'the ring so that the pusher ball can be inserted into the ring, rotated to fit with its end faces 17, 18 against the inner surface of the ring and expelled by a force 27 to deform the edge of the ring in two places 28, 29. The outer ring may be an iron base, nickel base or cobalt base alloy or any ductile metal. A larger sized pusher ball may be inserted into the ring an ejected to further deform the ring. The pusher ball may have a conical bevel on its leading face. The truncated bearing ball 31 is then inserted in the ring and the bearing placed on its undeformed face and the deformed areas 28, 29 pressed back into place, Fig. 11 (not shown). The outer ring may be heated or the pusher ball super-cooled to facilitate insertion of the pusher ball in the ring. If the outer ring is hardened by heat treatment after insertion of the bearing ball, the ball is made from heat resistent metal, e.g. tungsten carbide. Detailed heat treatment procedures for the outer rings are described.